Combined hinge and door-check.



P. MJA'R SGH, COMBINED HINGBAND DOOR GHBOK.

APPLIQATION FILED NOV. 9, 190a.

Patented 0013. 25, 1910 CQPY V UNITED sTA ps; Parana OFFICE.

PAUL MARKSCH, 0F VOI-IWINKEL, GERMANY, ASSIGNOR TO THE FIRM 05 W. & G.

V VOGEL, OF ELIB'EEFEEZD, GERMANY.

commni n amen AND noonfcnncir.

Specification of Letters Patent.

To all whom it may cmcc'rn:

subject of the German Emperor, residing at Vohwmkel, Germany haveinvented new and useful Improiements 1n Combined.

Hinges and Door-Checks, of which the following is a specification.

This invention relates to a combined hinge and door-check speciallydesigned to be used with doors which open in both directions, the devicebeing constructed so that the door is continuoilsly supported by one ofthe checking-cylinders. p

.In the accompanying drawings the improved combined hinge and door-checkis shown by Way of example.

Figure l is a ground planof the device.

Fig. 2 is a rear view of the opened door; Fig. 3 is'a front view of thedoor post, the door-being. in open position. ,Fig. 4 is a verticalsection representing the checking cylinder on a-larger scale.

As shown in Fig. 1, there are two checking cylinders a, a fixed to thedoor-post as so that one is at the right hand side and the other at theleft hand side of the door post. To the back of the door-leaf y thereare fixed two depending'arms 79, ;0 which form part of a plate 1'secured to the rear face of the door, said depending arms engagingrespectively with a hollow pintle d of the corresponding checkingcylinder aor a, when the door is closed.

The checking cylinders perform the double function of the fixed membersof a double acting hinge and of liquid chambers: they are constructed asfollows: in the upper end of the checking cylinders a or a,

which are both of thesame construction, a hollow pintle (l is mounted sothat it can turn in said cylinder but not displace itself in verticaldirection. The hollow pintle (Z is maintained in its position by-meansof a clamping ring 6 which has pins j which engage with horizontal slotsof the cylinder.

The upper end of the hollow pintle d is closed and flanged so that itsflange rests upon the upper edge. of the cylinder 0:. A groove 0, .or0', is arranged in the upper flanged part of the hollow pintle d whichserves for the receptionfof' the depending arm p .or p.j.The hollowpintle (i has a central boring in its lower part which is threaded athigh pitch and receives the correspondingly threaded rod 0 of piston Z1.

I Said piston 32 is guided with a feather in a Be. it known that 1, PAULMiinnsorr, a

which fills the cylinder above the piston i);

A channel 9', arranged in the wall of the cylinder serves for fillingthe checking-V liquid into the cylinder; said channel terminates at itslower end below the .piston 12 and it has a branch channel. g whichterminates in the boring of the cylinder above said piston. The upperend of the channel 9 is closed by means of a pin it whose upper,threaded and c' is screwed into the threaded enlarged upper end of saidchannel. The end of pink reaches down close to the branch channel g sothat t-he orifice of this branch channel can be more or less obstructedby said pin. The lower free end of the depending arms 7), p isflattened.

The device operates as follows :The cylinder between the upper surfaceof the checking liquid is filled into the cylinder a through the channel9 after the pin h has been removed, so that it fills the part of thepiston and the lower surface of hollow pintle a The pin isscrewed in andthe device iseready for operation. Normally both de pending arms p, pengage with the corre-' sponding grooves 0, 0 of the hollows (Z. of

the checking cylinders a, a. If now' the door'is opened the dependingarm p or p' which 1s situated in the direction in which the door isbeing opened remains in engagementwith its hollow pintle, the other armsliding out of the groove of its hollow pintle. The depending arm whichremains in engagement with the groove of the corresponding hollow pintlecauses said hollow pintle to revolve whereby the piston b of thecorresponding cylinder, mounts rapidly Patented Oct. 25, 1910.

owing to the high pitch of the thread. The

checking liquid flows through the non return valve m from the upper tothe lower side of the piston. The door is rotatably supported on saidhollow pintles of the checking cylinders which serve as a double actinghinge. When the door is being closed automatically by any of thenumerous well known devices for the automatical closing of doors, theliquid which has collected under the piston checks the movement of thedoor being slowly forced by the descending piston through the channel 9and branch g back into the upper part of the cylinder. The speed atwhich the checking liqrid flows back can be easily rc ulated by means ofpin h.

1 claim 2- In a combined hinge and. door check the combination with thedoor and door frame, of a plate secured to the rear edge of the door andhaving depending arms at its opposite ends,'t-wo checking cylinderssecured, respectively, to the opposite sides of the door frame eachprovided with a vertical channel in its wall, terminating at its lowerend just above the bottom of the cylinder said cylinder provided midwayits length with a port communicating with said channel, means includinga screw valve for closing said vertical channel, a hollow plntle havinghigh pltched screw threads rotatably emcee mounted in each of saidcylinders and having also a groove in its head to receive thecorresponding depending z-zrms of said fixed plate, means including aclamping ring, to prevent vertical movement of said pint-1e,

a pistonseated in the respective cylinders

